package day10;

public class Demo08 {
    public static void main(String[] args) {
        //System.out.println("123456".substring(1,4));
        for (int i = 1; i <= 5; i++) {
            if (i < 10) {
                StringBuilder sb = new StringBuilder();
                sb.append(i);
                sb.append("0");
                i = Integer.parseInt(sb.toString());
                System.out.println(i);
            }
        }
    }
}
